Carbureter.



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M. B. RICE. CAHBRLTER APPLIoATIog ULEB 001225, 1910 USED STATES PATENT OFFRIR MORGAN, OF LOS ANGELES, CALIFORNIA.

CARBUBIETER.

nonzero.

Specification of Letters Patent.

Patented Oct. 31, 1911.

Application filed October 25, 1916. Serial No. 589,047.

T all whom -1' t may concern.'

Be it known that 1,' MERRILL B. RICE, a citizen of the United States, residing at. Los Angeles. in the county of Los .Angeles and State of California, lhave invented a new and useful Carburetor, of which the following is a specification.A

The main object of the present invention is to provide a carburetor of simpl-sv construction which will produce a thorough and uniform mixture-of the gasolene or oil With the air. v

A further object of the invent-ion is to provide a carburetor which will adapt itself automatically to rapid changes in the demand thereon.`

Other objectsl of the invention will apnear hereinafter.

The accompanying drawings illustrate the invention, and referring thereto: Figure 1 is a vertical section of the earbureter showing the operative or opening portion thereof. Fig. 2 is a similar view showing the throttle in closed position. Fig. 3 is a side elevation of the earbureter. Fig, 4 is a horizontal section on line ##904 in Fig. 3. Fig. 5 is a horizontal section on line 'mL-wf in Fig. 1.

The earbmfeter comprises a easing toi-med with a. cylindrical tubular lower portion .constituting an inlet chamber which is open at its lower end to receive atmospheric air.

A tubular cylindrical port-ion eonstitutinfr an outlet chamber and provided with means such as a flange 4 for attachment to an intake or manifold of an internal combustion engine, and an intermediate portion formed as a swell or enlargement bet-Wee the cylindrical portions 1 and :2. An on supply pipe or duet 6 extends through one side of ,the inlet chamber 1 and a valve chamber 7 extends upwardly from this sup plyY pipe, being provided with an inlet eli-amber or reservoir S and with a valve seat 9 at the lower end of said chamber 8 and communicating with the Supply pipel 6. A spreader plate 10 on the upper end of the member 7. extends outwardly in the form of a. disk and is referably provided with an annular trougi or depression 11 near its periphery.

A movable valve member 12 adapted to .eoperate With the seat 9 is carried by a stem 13, guided by fins or ribs 14, sliding in the tubular member8, said stem having an upward extension 13' attached to an arm 1-5 which may extend in a lateral extension 1T from the portion 2 of the oarbureter easing. An adjustingT screw 1S, v'orking in said casing extension 1T serves as a stop for the upward movementof said arm and o-the valve member connected thereto. Said valve member carries a disk 2t) extending from the stem portion 13' over the spreader plate 10, so as to confine the oil issuing from the chamber Sto form a. thin street of oil7 whirl; issues at. the annular outlet formed between the spreader plate l() and the disk '20.

A throttle member is formed as a c v liudrical tube. sliding vertically within the easing portion 2, with its 'lower end extend ing into the. expanded portion 5 of the ensin;land approaeningv more or less closely to the regulating disk 2G, according to the adjustmentof the throttle. The. lined and movable spreader 4members 10 and 2O extend transversely in the enlarged portion of the casing and are ot about the same diameter as the outlet portion 2 of the eusingnnd o't" the throttle member 22, said throttle member forming an outlet. member -for the mii:- ture extending adjacent -to theA movable spreader to form sin annular passage betiveen said throttle member and the movable pre i this annular passage being adjusted or varied by movement of the throttle member longitudinally in the casing. Such adjustment of the throttle may be provided for. by

the throitie cylinder Q2 and carried by a shaft journaled in and extending through the'walls of the casing and having an operating arm 30 thereon at the outside of the easing. The tubular' throttle niem- 23 'for passage of shaft Y 1 l Means are provided for controlling the amount of gasolene admitted in correspondence with the amount` of airndmitted, such means providing,lr for control of movement of the gasolere controlli-ng valve 1Q in corre.- spondence with the imivement ot the throttle member 22. For this purpose an 111111.31, connected to the throttle shaft 28 is connected by :i rod to an arm secured to the screw 1S. so that as the controlling arm 30 is operated to open the throttle by means of the eccentric 25, the rod 32 will turn the screw 18, so as to raise the sume, allowing MERRILL B. RICE, Gl? tLOS ANGELES, CALIORNIA, ASSIGNOR OF ONE-HALF TO GEORGE er member. the dimensions of" lio the arm 16 to ascend farther-before itis stopped by said screw.. The movable spreader plate or disk' 2O 1s also controllel by the same operation..A

The operation is as follows: The carbureter being connected to an internal combustion engine, each suction operation `of the engine will draw air from the inlet through the throttle. In the closed or normal position shown in Fig. 2, the valve member 12 is against its seat t), the spreader disk is close to the spreader plate 10, and the throttle cylinder 22 is nearer said spreader disk. When the throttle is raised, for example, to position shown in F ig. l, and the suction is exerted therethrough as above stated, a condition of diminished pressure is brought upon the top of the spreader disk 20, and the said disk rises, opening the valve 9 and allowing gasolene to How into the chamber S, at the same time the suctional effect due to the rapid vmotion of the air into the throttle or outlet chamber and past the peripheries of the spreader members 10 and 20, tends to draw the gasolene from between said spreader members, said gasolene carried into and entrained with this current of air and passing into the throttle cylinder 22 and through the outlet of the carburetor. By'reason of the uniform exposure of all parts of the annular outlet presented between the peripheries of the members 10 and 20, uniform inixture is secured and on aecount of the large circumferential dimension of the outlet, opportunity is given for complete mixture. It will be understood in the operation of the engine, the chamber 8 will become filled with asolene and forms a reservoir upon which t e engine can draw in start ing up Without depending on the restricted opening afforded by the supply pipe (3. The annular trough 11 near the periphery of the spreader plate 10 also provides a reserve supply eapableof being taken up instantly in case of sudden increase in the demand on the engine. As the throttle is opened wider, admitting more air by increasing the space between the spreader member Q and the throttle cylinder 22, it is desirable 'to also increase the amount of gasolene admitted. The upward movement of the valve 12 is limited by the screw 18, and as the throttle is opened the said screw is rotated as above d( beth so as to allow said spring to rise farther and the valve l2 and spreaderdisk Q() to rise in correspondence therewith, thereby providing .for i?. reas-eil admission of oil andinereased area of ibo outlet therefor' betweenthe members 10 and 20.

That I claim is: y

Vl. A carbureter comprising,r a easing formed 'ith inlet and outlet portions and 1with an intermediate enlargement, an oi. supply connection extending into the casing enlargement in the casing, a `valve member cooperating with said valve seat, a movable spreader member connected to said valve member and extending parallel to and cooperating with said lixed spreader member to form an annular outlet between said members, ndim'eans extending from said outlet portion "of the casirg into proximity to the said mdvable spreader member to form an annular' passage between said means and said movable spreader member, whereby the delicienyof pressure in the outlet portion of the casing as compared with the pressure in the inlet poi-'tion of the easing tends to move the movable spreader member to open the valve. 1

2. A. carburetor comprising a casing having an inlet at the bottom and an. outlet at its top, an oil supply connection extending into said casing, a xed valvefmember formed with a valve seat communicating with said oil supply connection and with a horizontally extending spreader plate, a movable valve member cooperating with said valve seat, a movable spreader member connected with said movable valve member and' extending over the aforesaid spreader plate toV form in conjunction therewith, fan annular oil outlet, a tubular throttle member slidably mounted in the upper portion of said casing and extending Aover 'said movable spreader member to formi-in conjunction therewith, an annular passage for the mixture, adjacent to the periphery of the Inovable spreader member, and yielding supporting means for said movable valve member to allow the. same to be opened by the suction through the carbureter.

A carbureter comprising a casing formed with an. inlet and an outlet, a throttle cont-rolling thefoutliow of mixture from the casing, an. oil supply connection extending to the casingr and provided with a valve seat and with a spreader membena valve member cooperating with said valve seat, a movable spreader member connected to said valve and c operating with said fixed spreader member, to form an annular outlet between said members, and means for yieldingly supporting said valve member and movable spreader member to allow the same to be opened by the suction through the casing, means for limiting the opening m'ovef ment of said movable v'alvev memben'neans for operating the throttle and e connection from said throttle to said limiting means, to allow increased opening of the movable valve member in correspondence with increased opening of the throttle.

4. In acarbureter, a casing provided with an inlet and outlet portion. oil' supply means extending thereinto, fixed spreader means connected to said oil supply means and exending rfnlsversely in the casing and 'formed with an annular outlet eolnmunlcatlng; 'mth the ml'snpply means, a movable spreuder member extending above said llxed spreader ,Inomlmv and nzonniefl to move to and from the fixed spreader member, and n {h1-utile member slnlnbly nlcmnted in the outlel'- portion of the casing to move vertically lo nml from said movable spreader member and adjacent to the annular onleil forming MERRILL B. RICE.

In prese-nce of- ARTHUR P. KNIGHT, FRANK L.. A.- GRAHAM.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of' Pten'ts, Washington, D. C. 

